Pencil



H. R. JOHNSON.

PENCIL.

APPLICATION FILED IUNE 3.19m.

Patented July 18, 1922.

2 SHEETS- L XI I i.. IIII H. R. JHNSON.

PENCIL.`

APPLICATION HLED JUNES. 1921.

1,422,984, Patented July 18, 1922.

2 SHEETS-SHEET 2.

OFFCE.

To all fau/wm t may concern;

(Be it known that I, HAROLD R. JOHNSON, a citizen of the United States, residing at Cranston. in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Pencils, of which the following is a specification.

My invention relates to magazine pencils wherein the lead is propelled and retracted.

The essential objects of my invention are to enable the entire length of the lead to be utilized; to facilitate assemblage ofthe parts and prevent cramping the same; to enable the use of a short screw and a sensitive action and control of the lead shaft. Other advantages will be apparent from an examination of the following specification.

To the above and kindred ends my invention consists in such parts and in such combinationsof parts as fall within the scope of the appended claims.

In the accompanying drawings which form a part of this specification, .Y f

'Figure 1 is a side elevationof my novel pencil,

Figures 2 and 3, vertical central sections of the same, showing the lead carrying parts in side elevation, and in two different positions of propulsion,

Figure 4, a section taken on line 4 4 of Figure 3 but with the lead carrying parts in the third position,

hlgure'y 5, a longitudinal section of the s e Figure 6 a perspective view of the guide tube and ferrule,

,Figure .7, a side elevation of the screw,

Figures 8, 9, and 10,

plunger, and the lead carrier, and Figure ,11, a section on line 11-11 of Figure 6.

Like reference characters indicate like parts throughout the views.

y pencil comprises a shell 13 provided with a: vbody portion 14 yand an' integral conical tip or point tube 15. In the shell is rotatably mounted a. helical tubular screw or sheath 17 provided with the helical groove or slot 18 and lterminating at its lower end with a horizontal curved point 19. The

head portion of the screw member comprises a ferrule 21 provided with an external annular shoulder 22 and terminating in a milled knob 24. The `upper coil of the screw Specification of Letters Patent. applicati@ mea June a,

rigidly engage the perspective views' respectively of the carrier controller, thev Patented July 18, 1922.

1921. sria1No.474,esa

is fast by spring pressure to the interior face of the ferrule. An inturned shoulder or iiange 28 on the upper end of the shell 13 overlaps the shoulder 22, whereby the screw is rotatably mounted in the shell.

Concentric of the shell and within the screw is -a tubular guide 30 provided throughout its length with a longitudinal slot 31. Al conical spring ferrule v32 prov lded with an opening 33 inf its lower portion and longitudinal slots`34 extending from points near the opening to form resilient segments 35 is rigidly mounted on the guide, and a projection 36 on the bottom of the ferrule extending into the slot 31 of the guide prevents rotation of the ferrule on the v gulde, and the segments 35 snugly and casing tip 15. This ferrule rigidly maintains the guide in position. Slldably mounted on the @guide 3G is a cylindrical controller 37 for the lead carrier comprising a longitudinally cut away intermediate portion slot 39, Vand longitudinally split upper and lower sleeve portions 40 and 4l respectively, the former being provided with a hole 42.

'Ehe lead carrier consists of the usual split tube 44 for enclosing the lead 47 having upon-its upper end a lug 46. The carrier is slidable inthe guide 30, and the lug'46 slides in and projects through the slot 31 of the guide and 39 of the carrier controller. The sleeve ortions of the controller form stops which limit the reciprocal travel of the lead carrier lug 46.

Slidable in the carrier is a long plunger irod 48 with a lateral end finger 49 above the carrier and projecting through thel slot 30 and thehole 42.

In full retracted position, as shown in Figure 2, the finger 49 and lug 46 extend into the travel downwardly therein in unison as the screw is manually rotate by means of the knob 24, the leadl- 47 being As the screw revolutionis continued the controller 37 with the lead 47 continues to slide downwardly, with the elements 49 and 46 traveling in the groove 18 until the lug 46 reaches a point below the oint 19, as shown in Figure 3, whereupon t e lead carrier 44 discontinues its descent andthe last portion of the lead 47 is exposed for use. If, however, it is desired to eject the lead 47 from the casing, the rotation of the screw is,

38 forming aflongitudinalhelical groove 18 of the screw, and

exposedfor use.

icontinued' and operates, solely on the con-.

clude all the advantages of this type of pencil in a short body. To retract the parts to original position the described operations are reversed by rotating the screw in the oppositefdirection. rlhis elevates the plunger, and as the controller rises the sleeve portion 41 nally presses against the lower edge of the lug 6 and raises it sufficiently Jfor the screw point 19 in its rotation to also pass beneath the lug and -impel it upwardly in the groove 18 in unison with the plunger finger.

l claim:

I. In a pencil of the character described, a

`shell, a tubular guide rigidly supported in the shell concentrically thereof and provided with a slot, a screw rotatably supported in the shell surrounding a portion of the guide, a tubular .controller slidably mounted on the guide provided intermediate its length with a longitudinal slot and with a hole, a lead carrier slidably mountedin the guide, a lug on the 4carrier extending through the slots and into the screw, a plunger slidable in the carrier, and a linger on the plun er extending through the first slot, and -ho e, and in to the screw.

2. In a pencil of the character described, a shell comprising a bod and a tapering tipa tubular gui e provided with a slot, a ferrule fast to the guide comprising tapering resilient segments. engaging the tip, a projection on the errule extending into the slot, a screw rotatably supported in the shell, a carrier in rier engaging the screw.

3. ln a pencil of the character described, a shell comprising abody, a tapering tip integral therewith at one end, and a flange at the other end, a ferrule extended within the end of the shell and provided with an annular shoulder rotatably engaged by the flange, a head on the ferr-ille, a screw fast in the ferrule, a tubular guide supported in the shell concentrically of the screw and provided with a longitudinal. slot, a lead carrier slidably mounted in the guide, and

the guide, and a lugon the cari ,aaaeee a lug on the carrier extending through the slot and engaging the screw.

Il. ln a pencil of the character described, a shell, a tubular guide rigidly supported in said shell and having a slot, a screw rotatably supported in the shell around the guide, a controller around the guide and within the screw, and a lead carrier slidable within the guide and'governed for a portion of its travel by said controller.

a shell, a tubular guide rigidly supported in said shell and having a slot, ascrew rotatably supported in the shell around the guide, a controller around the guide and within the screw, a lead carrier slidablc within the guide and governed ,for a portion of its travel by said controller, and a plunger rod operable to move the lead after said cntroller has discontinued its travel.

6. In a pencil of the character described, a shell, a slotted tubular guide, a screw rotatably supported in the shell around the guide, a tubular controller around the guide and within the screw, a lead carrier in said guide and having a linger working in the slot of the guide, and a plunger rod in the -lead carrier working in said slot, said lead carrier and plunger rod being controlled in their movements by said controller and screw.

7 ln a pencil of the character described, a shell, a slotted tubular guide, a screw rotatably supported in the shell, a lead carrier, a plunger rod, each with a projection working in the slot of the guide, and a tubular controller having a slot through which said projections extend, said controller also having shoulders for cooperation with the projection on the lead carrier.,

8. In a pencil of the character described, la shell, a slotted tubular guide, aV screw rotatably supported in the shell, a lead carrier, a plunger rod, eachjwith a projection working in the slot of the guide, and a tuhular controller having a slot through which saidv projections extend, said'controller also having shoulders for cooperation with the projection on the lead carrier, the projection on the said plunger rod cooperating with the screw for the entire travel thereof, and the projection of the lead carrier being disengageable from operative relation with said screw after a portion of its travel.

In testimony whercof'I have aflixed my signature. lHAROLD R. JOHNSON.

5. lua pencil of the character described, j 

